1  #include <linux/version.h>
       2  #include_next <linux/aio_abi.h>
       3  /* IOCB_CMD_PREADV/PWRITEV has been added in 2.6.19 */
       4  #if LINUX_VERSION_CODE < 132627
       5  #define IOCB_CMD_PREADV 7
       6  #define IOCB_CMD_PWRITEV 8
       7  #endif